CCbar analysis

M. Guler, METU, Ankara

0mu/1mu selectionI:I:If (If (a vertex with one TT-matched track & Parent track (at least a vertex with one TT-matched track & Parent track (at least 0ne-segment) & at least two-segment daughter having TT-0ne-segment) & at least two-segment daughter having TT-hits is reconstructed) hits is reconstructed) II:II: If (If (a vertex with one-TT matched track & at least 3-segment a vertex with one-TT matched track & at least 3-segment Isolated Muon (or good hadron in 0mu) is reconstructed)Isolated Muon (or good hadron in 0mu) is reconstructed)III:III:If(If(a vertex wih at least one-TT track && a second vertex with a vertex wih at least one-TT track && a second vertex with trackstrackshaving TT-hitshaving TT-hits ) )IV:IV:If(If(a muon track (or good hadron in 0mu) is recontructed && at a muon track (or good hadron in 0mu) is recontructed && at least 3 –segment track stop in the same plate.least 3 –segment track stop in the same plate. ) )

Data sample: Map-03-04-15 (157846 events)

Netscan Nucleus: Ver-03-09-02

Selection: SatoMurat-ver03&& golden-04-02-02.awk

NuMu-CC events= 95450(93890)

-Selected= 2816

-2059 charm

-5 double charm

0mu events= 26568+1502

selected=827

-347 charm

- 3 double charm

DData sampleata sample

TTT #6T #6

TTT #1, PT #1, Pd2d2>4.11 GeV/c @ 90 >4.11 GeV/c @ 90 C.L.C.L.

TTT #3, PT #3, Pd1d1>3.81 GeV/c @ 90 >3.81 GeV/c @ 90 C.L.C.L.

TTT #2, PT #2, Pdd>1.82 GeV/c @ 90 C.L.>1.82 GeV/c @ 90 C.L.

ppl26l26

7692557576925575

E=41.4GeVE=41.4GeV

= 14.9+-2.0 mrad= 14.9+-2.0 mrad

11ry@pl26ry@pl26NNs=2, Nh=0s=2, Nh=0V2 @V2 @pl 26pl 26=104.2 mrad=104.2 mradfl= 223.9fl= 223.9mm Min_mass >0.68 GeV @ 90 CL.kink @pl 26kink @pl 26fl= 163.0 fl= 163.0 mm

=179.0 mra=179.0 mra dd

PPTT = 0.719 = 0.719 -0.258 -0.258 GeV/c(MCS)

PT>0.323 GeV/c @ 90 C.L.

+0.786+0.786

7692557576925575

co-planality

TTT #6 PT #6 PPP>0.66 GeV/C @ 90 CL.>0.66 GeV/C @ 90 CL.

TTT #3 T #3 PPd4d4>2.72 GeV/c @ 90 CL.>2.72 GeV/c @ 90 CL.

TTT #8, T #8, PPd2d2>4.66 GeV/C @ 90 CL.>4.66 GeV/C @ 90 CL.

TTT #5, T #5, PPd1d1> 1.39 GeV/C @ 90CL.> 1.39 GeV/C @ 90CL.

ppl23l23 ppl22l22

8133231281332312

E=29.9GeVE=29.9GeV

PPd3d3>3.33 GeV/c @ 90 CL.>3.33 GeV/c @ 90 CL.

= 24.2+-5.3 mrad= 24.2+-5.3 mrad

= 36.1+-0.3 mrad= 36.1+-0.3 mrad

813323128133231211ry@pl23ry@pl23NNs=1, Nh=3s=1, Nh=3V2(1) @V2(1) @pl 23pl 23=96.3 mrad=96.3 mradfl= 62.8fl= 62.8mm Min_mass >0.76 GeV @ 90 CL.

V2(2) @pl 22 V2(2) @pl 22 fl= 976.6fl= 976.6mm

=203.4 mra=203.4 mra dd

Min_mass >1.33 GeV @ 90 CL.

11ry@pl9ry@pl9NNs=2, Nh=0s=2, Nh=0

kink @pl 9kink @pl 9=182.9 mrad=182.9 mradfl= 50.9fl= 50.9mm

trident @pl 8trident @pl 8fl= 398.0 fl= 398.0 mm

E=21.6 GeVE=21.6 GeV

Pl 9Pl 9 Pl 8Pl 8

TTT #2T #2

TTT #1T #1

TTT #3T #3

TTT #4, P = ?T #4, P = ?

56452542 56452542 rejectedrejected

7739395277393952

11ry@pl28ry@pl28NNs>10, Nh>10s>10, Nh>10Kink @pl 26Kink @pl 26=79.4 mrad=79.4 mradfl= 1367.5fl= 1367.5mm PPTT= 0.079 = 0.079 -0.01-0.01 GeV/c GeV/c (MCS)(MCS)PPTT>0.047 GeV/c @ 90 CL.>0.047 GeV/c @ 90 CL.

trident @pl 25trident @pl 25fl= 2556.5 fl= 2556.5 mm

78220511 78220511

Pl28Pl28 Pl 26 Pl 26 pl 25pl 25

E=9.9 GeVE=9.9 GeV P=-12.2GeV/cP=-12.2GeV/c

+0.02+0.02

Evis=22.2GeEvis=22.2GeV/cV/c

E=36.9 GeVE=36.9 GeV P=-16.9 P=-16.9 GeV/cGeV/c

Pl31Pl31 pl30 pl30

7904494479044944

PPd1d1>4.70 GeV/c @ 90 CL.(>4.70 GeV/c @ 90 CL.(TTT #2)T #2)

PPd2d2>0.67 GeV/c @ 90 CL.>0.67 GeV/c @ 90 CL.

PPd3d3>2.32 GeV/c @90 CL.(>2.32 GeV/c @90 CL.(TTT T #7)#7)

PPd2d2>1.92 GeV/c @90 CL.(>1.92 GeV/c @90 CL.(TTT #5)T #5)

Evis= 53.8 GeVEvis= 53.8 GeV

d1d1

d2d2

DD00

= 14.3+-2.0 mrad= 14.3+-2.0 mrad

7904494479044944

11ry@pl31ry@pl31NNs=4, Nh=0s=4, Nh=0V2 @V2 @pl 31pl 31opop= 340.2 mrad= 340.2 mrad

fl= 58.2fl= 58.2mm Min_mass> 0.79 GeV/c @90 Min_mass> 0.79 GeV/c @90 CL.CL.(using MCS momentums)(using MCS momentums)

V4 @pl 30V4 @pl 30fl= 761fl= 761mm

co-planality

7789107177891071

E=35.4 GeVE=35.4 GeV P=-13.5 P=-13.5 GeV/cGeV/c

Pl 7Pl 7 Pl 6 Pl 6 pl 4pl 4

Evis=48.9 Evis=48.9 GeVGeV

P>2.04 GeV @90 CL P>2.04 GeV @90 CL

P>0.31 GeV @90 CLP>0.31 GeV @90 CL

P>1.92 GeV @90 CLP>1.92 GeV @90 CL

d1d1

d2d2

DD00

= 17.2+-2.0 mrad= 17.2+-2.0 mrad11ry@pl7ry@pl7NNs=6, Nh=1s=6, Nh=1

V2 @V2 @pl 6pl 6fl= 257.0fl= 257.0m m MMminmin> 0.58 GeV @90 CL> 0.58 GeV @90 CL

kink @pl 4kink @pl 4fl= 2271.6 fl= 2271.6 mm

= 67.4mra= 67.4mradd

PPTT> 0.14 GeV @ 90 CL> 0.14 GeV @ 90 CL

7789107177891071

co-planality

7769108077691080

E=17.5 GeVE=17.5 GeV P=-22.9 P=-22.9 GeV/cGeV/c

P33P33 Pl31 Pl31 pl29 pl29

Evis=40.4 Evis=40.4 GeVGeV

PPdd> 0.39 GeV/c @90 CL.> 0.39 GeV/c @90 CL.

PPd1d1>2.08 GeV/c @90 >2.08 GeV/c @90 CL.CL.

TTT #4T #4 P Pd2d2> 1.09 GeV/c @90 CL.> 1.09 GeV/c @90 CL.

d1d1

d2d2

DD00

= 52.4+-2.0 mrad= 52.4+-2.0 mrad

7769108077691080

11ry@pl33ry@pl33NNs=2, Nh=4s=2, Nh=4

kink @pl 231kink @pl 231=302.0 mrad=302.0 mradfl= 1445.5fl= 1445.5mm PPtt= 0.2 = 0.2 -0.04 -0.04 GeV/c (MCS)

Pt> 0.12 GeV/c @ 90 CL.

V2@pl 29V2@pl 29opop= 298.0 mrad= 298.0 mrad

fl= 3012.6 fl= 3012.6 mm

Min_mass>0.77 GeV @ 90 Min_mass>0.77 GeV @ 90 CL.CL.

+0.07+0.07

co-planality

11ry@pl22ry@pl22NNs=2, Nh=0s=2, Nh=0Trident @pl 20Trident @pl 20fl= 1105.4 fl= 1105.4 mm

Min_mass>0.57 GeV @ Min_mass>0.57 GeV @ 90 CL.90 CL.

V6?@pl 20V6?@pl 20fl= 1211.2 fl= 1211.2 mm

Min_mass>1.8 Min_mass>1.8 GeV @ 90 CL.GeV @ 90 CL.

51872165 51872165

E=75.4GeVE=75.4GeV P=-106.7 GeV/cP=-106.7 GeV/c

P22P22 Pl20 Pl20

Evis=182.3 Evis=182.3 GeVGeV

PPt1t1>3.81 GeV/c>3.81 GeV/c PPt2t2>1.29 GeV/c>1.29 GeV/cPPt3t3>2.58 GeV/c>2.58 GeV/cPPd1d1> 2.38 GeV/c> 2.38 GeV/c

PPd2d2>0.92 GeV/c>0.92 GeV/cPPd3d3> 1.03 GeV/c> 1.03 GeV/cPPd4d4>1.31 GeV/c>1.31 GeV/c

V5 ?V5 ???

MC simulation

Herwig(G.D.L)--->Eficass ---->Chant

~~30 K CC && ~53 K NC ccbar events30 K CC && ~53 K NC ccbar events

CC NC

ccbar MC

1521m2395m

CC NC

Charm fractions CC NC

DD0 0 D D0 0 D D+ + D D- - DDs+ D D s

- ccc c - -

18.9 26.9 13.6 15.7 1.3 6.6 16.1 1.0 (%)

Hadronization

DD0 0 D D0 0 D D+ + D D- - DDs+ D D s

- ccc c - -

24.9 28.7 18.5 15.9 2.8 4.9 4.1 0.2 (%)

NC

CC

Efficiency estimationNCDIS CCBAR MC events

All events : 53034In Emulsion : 28792 (54.3%)Prdc>0 : 13534 (47.0%)Right stack : 12589 (93.0%)SB found in CS: 10066 (79.9%)Located as 0mu: 4862

(48.3%)Selected : 1716 (35.3%)

net±0.7

loc±0.2

CCDIS CCBAR MC events

All events : 29939 In Emulsion : 16264 (54.3%)Prdc>0 : 7954 (48.9%)Right stack : 7500 (94.3%)Muon found : 6320 (85.1%)Located as CC : 4661 (73.8%)Selected : 1055 (22.6%)

net±0.6

loc±0.4

Selection efficiencies

Kink PT

Location efficiencies

Primary vertex secondary vertex event yield

N --c X prong

N --chXh white kink

N --chXh white trident

N --chXhwhite C5

N --ch0Xh0 white V2

N --ch0 Xh0 white V4

Overall 0.79

Background in CC ccbar

Primary vertex secondary vertex event yield

N --c Xprong

N --chXh white kink

N --chXhwhite trident

N --chXhwhite C5

N --ch0Xh0 white V2

N --ch0 Xh0 white V4

Overall 0.12

Background in NC ccbar

3 candidate events in NC are signal and background is 0.12±0.02

loc(ccbar)/loc(NC) =0.77+-0.01

(cc)/(NC)=(3.5±2.1±0.6)x10-4

Production rate

5 candidate events in NC are signal and background is 0.79±0.10

loc(ccbar)/loc(NC) =0.51+-0.01

(cc)/(CC)=(3.9±1.9(stat)±0.6(syst.))x10-4

2 events survive PT>0.25 GeV/c assume bg ~0.2loc(ccbar)/loc(NC) =0.51+-0.01

(cc)/(CC)=(1.7±1.3(stat)±0.3(syst.))x10-4

Production rate

Status

• Draft2 is ready• Waiting the comments (some

already received)

DD0 0 (%)(%) D D+ + (%)(%) D Dss(%) (%) c c (%)(%)

DD00 23.5+-0.3 14.9+-0.2 2.1+-0.123.5+-0.3 14.9+-0.2 2.1+-0.1 16.6+-0.3 16.6+-0.3DD-- 12.4+-0.2 7.9+-0.2 1.0+-0.112.4+-0.2 7.9+-0.2 1.0+-0.1 8.9+-0.2 8.9+-0.2DDss 5.5+-0.2 3.2+-0.1 0.4+-0.15.5+-0.2 3.2+-0.1 0.4+-0.1 3.5+-0.1 3.5+-0.1

neutral + neutral= 23.5+-0.3 % neutral + neutral= 23.5+-0.3 % neutral + charged= 51.5+-0.3 %neutral + charged= 51.5+-0.3 %charged+ charged= 25.0+-0.3 % charged+ charged= 25.0+-0.3 %

Hadronization

V2V2 V4 V4 V6 V6 C1 C3 C5 C1 C3 C5V2 V2 14.6+-0.2 7.2+-0.2 0.1+-0.1 18.6+-0.3 18.9+-0.2 1.1+-0.114.6+-0.2 7.2+-0.2 0.1+-0.1 18.6+-0.3 18.9+-0.2 1.1+-0.1

V4V4 - 0.8+-0.1- 0.8+-0.1 0.0+-0.1 4.2+-0.1 4.6+-0.10.0+-0.1 4.2+-0.1 4.6+-0.1 0.3+-0.1 0.3+-0.1

V6V6 -- - 0.0+-0.1 0.1+0.1 0.0+-0.1 0.0+-0.1 - 0.0+-0.1 0.1+0.1 0.0+-0.1 0.0+-0.1

C1C1 -- - - - - 5.1+-0.2 5.1+-0.2 10.8+-0.2 0.3+-0.110.8+-0.2 0.3+-0.1

C3C3 -- - - - - - 5.7+-0.2 0.8+0.1- 5.7+-0.2 0.8+0.1

C5C5 -- - - - - - - 0.0+-0.1- - 0.0+-0.1

Hadronization